Culinary utensil



June 10, 1930.

C. F. BURKHARDT CULINARY UTENS IL 3 Sheets-Sheet '1 Filed June 17, 1929 Gttorneg June 10, 1930. c F, BURKHARDT 1,762,257

CULINARY UTENS IL Filed June 17, 1929 3 Sheets-Sheet 2 9 inventor A2. Es fi'flu/f/rmmflr r I Q Gttomeg c. F. B-URKHARDT 7 1,762,257

CULINARY' UTENS IL 5 Filed June 17, 1929 Julie 10, 1930. I

3 Sheets-Sheet 5 I attorney Patented June 10, 1930 v a 1 762 257 i p U T T ES PATE T go FicE v cHAia ns IE. nunxnennnor wi snm DISEBICT bFlO-L-UMBIA j V i l v e mvmsm I V H I Application filed June i7, i929." s eriaino; 3 1,5 3.; v

' My present invention relates to an im{ FigureQis a plan view of the utensilwith proved. culinary 'HliBIlSll in which are comthe cover removed and parts broken away .bined features or elements that adapt the for convenience'of illustration, the rotary utensil for baking, bI'OlllIlg, roasting, toastgridbeing shown as arrangedfor a thick ll; f

ing, warming, and variousother culinary slice of toast, or acomparatively thick steakj processes. 1 or'chop to be-rbroiled.

l/Vhile my utensil may be heatedtelectrical- Figure 3 is a detail View showing a secv ly, by the use of an oil stove, or by placing tion of the rotary shaft of the grid showing l l itupon a coal range to receive heat there- -a friction springbearing thereon, j I 10 from, I preferablyutilize a gas stove or gas v Figure 4: is a perspective View, reducedgiqo' burner to supply the heat to the V-interior-jscalemf the false or removable bottom of the i ofthe receptacle or utensil. utensil,.thebottom being shownininverted]; In carrying out my invention I utilize a position for convenience of illustration; lid or cover for most of the cooking pro- 1 Figure 5 is a perspective view, also "on/a cesses, and I also utilize a rotary grid or reduced scale, of'a removable tray or pan carrier within the interioroftheutensil-for that is located below the rotary grid to broiling, toasting, '&c, I, 1 catch and retainthe juice'or'gravyfwhen Theutensil is simple in constructionand meat is-beingbroiled' I compactly arranged, thus insuring facility" Figure 6 is a' detail view of the rotary cari in 111 nufacture and low cost of production; rier or grid, detached, and adjusted to a .0

' oven, the utensil may quickly be heated and "is a' perspective view showing the exterior ,tr'ate one exemplification of my invention and slightly'large'r than the cross'area of i principles of my invention. signed to restupon the topfof a gas-stove,

"- work mechanism,'for rotating the 'gr1d'." Within the interior-of the receptacle a it is possessed of ample or adequate capacommodate a slice of toast or thin city for fulfilling its functions; and it is steak.

particularlyeconomical in the consumption Figure 7 is a face view of the reversible of fuel for heating purposes; 'As a protable or interchangeable grid-rack, and Figure 8 readily maintained at a unlform' and regular of the utensil.

temperature, and after use, the heat'i's dis- The bodyl of the receptacle portion of sipated andthe utensil quickly cooled.- r the utensil, while here shown asrectangular," The lDVBntlOIi consists n certain, novel maybe of otlierrlesired'or suitablesha'pe,

, 30 combinations and arrangements of parts as andis preferably fashioned from sheetimetal will hereinafter be'more fully set forth'and orlsheetsteehand handles2 may be attached Y claimed. Inthe'accompanying drawings-l to the body for manipulating the utensil. I have illustrated. one complete example of A removable lidforcover 3 is'designed to fit r the physical embodiment of my invention over the top edge'of the receptacle, and the 35 wherein the parts are-gcombined and ar- Cover which is provided with vent holes 3 5 ranged according 'to the best mode-I have may or may not be used, dependingupon I thus far devisedffor the practical applicathe requirements of various cooking proction of the principlesof my invention. It "esses.

will be understood that the drawings illus- A base plate l, preferably of cast'metal,

and that various changes as tosize,ishape, the receptacle,fornls the bottom Oftheutenand arrangements of partsmay be made in sil, and this'plate is secured,- as by'r1ve'ts5 the exemplified structure, within the scope andlugs '6, to the 'bottomof the sheet metal of my claims without departing fromfthe receptacle. "The base plate is; of course de Figure 1 's aflvertical' sectional view.v or over a gas burner, and is substantial in 7 through a covered utensil embodying my 'incharacter in order to withstand the heat, vention, the rotary grid beingvshown therein prevent warping, or other deformation of together with mechanicalmeans ascloclzparts ofthe utensil; i

' tapered wall 7 is provided at the four sides the upper edge of the receptacle toward the lar, tapered,

base plate, to which they are riveted at 9, the rivets being passed through lugs and the base plate.

A hot air space or fine is thus provided he tween the four straightside walls of the receptacle and the complementary converging walls of the interior of the rece tacle and the hot air currents from the stove or burner pass through slots 11 in the base plate into these spaces and thence through the perforations to the interior of the receptacle in which a cooking chamber is provided.

V The four slots lllextend alor the edges of the base plate, and at the corners of the slotted plate are provided diagonally extend- 'ing brace arms 12 for rigidly connecting the inner and outer walls of the receptacle.

'As the air currents rise through the slots into the heating spaces between the inner and outer walls, they are deflected toward the perforated walls by means of a rectangudeflector 18, integralwwith the base plate, and which projects upwardly "into the spaces at the four exterior sides of the inner tapered wall. 1

A removable bottom-plate isprovided with corner legs or feet'15, which rest upon the base plate within the receptacle, and this plate is used to distribute the heat arising from the base plate and passing the edges of the bottom plate, to prevent concentration of intense heat at the central portion of the cooking chamber.

The heated air currents pass through the perforated walls 7 to the interior of the cooking chamber, from which chamber the hot air escapes if the lid is removed, or. the

'heat isr'retained when thelidor cover is in f place and the interior of the utensil forms an oven or warming chamber-1n which victuals maybe baked, cooked, or warmed.

At the four corners of the walls of the cooking chamber are provided horizontal lugs 16 that may be fashioned by punching out or striking up the metal of the walls to form supports for various devices,' s a tray 17, to be used when 'broi ing meat, as in Figure 1. The tray is provided with a knob or handle 18 and a fork, or other implement may be used, when the, tray is hot, for lift-- 111g the tray out of the cooking chamber.

In some instances the rack of Figure 7 may be substituted for the tray in Figure 1, as when potatoes or apples are to baked, and these latter are deposited on the rack for the purpose, the lid or cover of course being closed for the purpose of confiningth'e heat in the'ove n, V

. Combin'c'dwith the oven: as a fea t reef the utensil, liitilize a rotary grid of carrier that is adapted t6 be disposed transversely cooking process; a clamping frame 20; and

a reversible 0r interchangeable grid-rack 21, thetwo latter members being separable from one another and removable from the cooking chamber, and also separable from the grid frame 19. The clampframe or rack 20 is provided with crossed wires 23 and the grid rack 21 is provided with cross wires 22 be tween which the article to be heated is carried in the rotary grid.

The several pieces of the rotary grid are of generally rectangular shape and the rotary device is of a size so that it may readily be turned or revolved within the cooking chamber. The open grid framev 19 is fashioned of angle-plates or angular sheet metal strips, and the clamp member is also fashioned of angular metal strips, but it is apparent that these three grid members may be fashioned in various ways, in order that the article to betreated in the cooking chamber may be carried thereby. i 7 The grid-frame is open so that access may be had through the frame, in the absence of the other two members 20 and 21, to the interior of or the bottom of the receptacle, when depositing articles therein and removing articles therefrom.

In orderthat the rotary grid may be r0- tated or revolved, the grid frame is provided with alined trunnions, the trunnion 24 having a handle 25 and the trunnion 26 having a perforated rounded head 27, the trunnions having journal hearings 28 in the up per edge of the receptacle or body of the utensil. 7

By means of the handle or knob 25, the rotary grid may manually be revolved under some conditions if desired, and by means of this handle the grid may be swung up and out of the receptacle on its pivot pin 47 in order to gain access to the grid for arranging its parts, and the lower edge of the lid or cover is notched'or cut away as at 29 to permit the cover to fit over the upper edge of the receptaclewhile the rotary grid is in its bearings.

' The reversible or interchangeable and removable grid-rack 21 is adapted to be supported in the grid frame, and for this purpose the rack is provided at its four corners with bosses 30 that, are fashioned with alinedend pins 31; and'32, the latter pins passing through and attaching the bosses to the frame portion of the rack 21. The hos-see are located, at one side of the rack and their pins 31, 32 are adapted for alternate or selective insertion in pin-holes 33 in the grid-frame 19. Thus, in Figure 2, with pine 32 inserted in the holes 33, theigrid is adapted to accommodate a thick 1 slice of bread for toast, or a thick'slice of steak for parts together, and for this purpose-the clamp-frame has a, central. cross plate upon which is pivoted a spring blade 35, a bushing'36 on the .blade'and a pin 37 on the plate being utilizedto permit pivotal move! ment of the blade. The blade is of course resilient, and near its ends are providedwith push-cups 38 fashioned of heat-conducting material, or in suitable" manner. insulated against heat, to protect the fingerand thumb as they are appliedltheretor- For co-operation with the ends of the wound motor to the grid, and this 'pin' 'is "also-used as a pivot when the grid is swung up and out of the ovenl resilient clamp blade, the grid frametis'provided with a pair of flanges or'hooks39 projected laterally from the trunnion of the grid, and it will be apparentthat by pres sure on the push-buttons and a turning movement of the spring blade, the ends of the latter may be engaged'under the hooks to clamp thepgrid parts and also the commodity carried bywthe grid." The parts of the grid may of coursebe-unclamped or released by a reverse movement of the spring blade.

If desired or necessary, heat insulat ing washers 40 may be interposed between the push buttons andthespring blade for the protection of the finger and thumb used,

to press the buttons. 7 V

In Figures 1 and 2a semi-circular handle 41 is shown as attached to the spring blade,

and this handle maybe used as'in these figures of the drawing, or asindicated in Figure 6 the handle 41 may be dispensed with, and the spring blade is manipulated by pressure on the pushbutton's. v r

As before indicated, the rotary grid, under some conditions, may ,be manipulated manually by the use of the handle or knob 25, but I prefer to use a mechanical device, as a clock-work mechanism, forrotating the grid within the oven.

The clock-work mechanism of suitable type is shown by dotted lines as enclosed within a housing 42, attached to one side of thesoven,

and the mechanism is wound by the use of a,

crankhandle 43 on the crank shaft 44., The mechanism includes a spring, gears, pin ons, escapelnent, &c., and of course the spr ng 'actuate the'inotor or mechanism for continuously rotating the grid, until the spring runs down? Preferably the crank handle projecting arm 47? carried by the shaft remains on the crankshaft'while the motor is revolving thegrid, and this rotationi'of the crank handle is a visible sign or indicator, to theattendant, that ther'otary grid is operating, and may require attention; 7

After the springqnotor is wound, ifthe grid'is' not to be used, a- U-shapedsafety hood 4L5, pivoted on the housing 42, may bev turned up to position in Figure 1 for holding the motor inoperative; 'VVhen turned up, the hook is in the path of the crank handle, and as the latter is urged by the'motor against the hook, thelatterj is held in place.

The driven wheel 46 of the 1 motor is loosely. journaled onithe driven shaft 47, and .the'shaft is journaled in the housing 42.

47 carried by the shaft in the path of move ment of the pin. The shaft is provided The loose'wheel 46 transmits power to the Y with a bifurcated and perforated head 48 V "complementary to the trunnion-head 27, and a couplingpin- 49 is passed through these complementary heads so thatthey will transmit thefrotary motion from the spring A's seenin Figure3the shaft is fashioned ;with a pair of .opposed flat faces 50 that form edge shoulders,iand acspring blade 51,

anchored ona bracket of the housing 42, bears onthe flat faces and the shoulders as thegri'd revolves. I The spring blade intermittently accelerates the'rotation of the grid, as the'edges grid may be subjected to greater-heat'than the toast carried in the upper part-of the grid, were it not for the fact, the spring accelerates the rotation of the grid at this point, and hastens its movement from vertical toward the horizontal position. This laterally projecting pin 46 and the radially in the path of movement of'the pin.

accelerated movement is' made 1 possible; by the use of'the loose drivenfwheel and-its Having thus fully described my mvn f tion, what I'claim'as new and desire to secure by1Letters Patent is 1; "In a culinaryjutensil the combination with; a slottedbase plate and an outerwall secured thereon and a container securedto. the base. plate within the slotted portion,

said container having outwardly; flaring" f V wardlv converging, deflector Wall above a '7 portlonof the base-plate-slot,

walls and perforations therein, an'd'an 1n- 2. The combination n a culinary utensil V with'a base plate having slots near its pelriphery, an outer wall secured to the base with a base plate having'a series of borderslots and corner brace'arms, spaced inner and outer walls forming a heating space above the slots, and means forfastening the walls to the plate, of an inwardly tapering deflector wall above the slots and projecting utensil.

into said space, a plurality of supporting lugs on the inner wall, said inner wall ham mg perforations therein and flaring outwardly from the base plate to the upper edgeof the, outer wall, and a cover for tie l. In a culinary utensil, with a heating chamber, of a rotary grid supported in the chamber and 7 operating means therefor, said grid having a pivotal connection to permit displacement from the chamber, a separable part to the gr'd, and means for fastening saidseparable part.

5. The combination with a heating chamber, of a rotary grid comprising a frame, a reversible rack and means thereon for adjusting said rack in the frame, and. a clamp frame for the grid.

6. The combination with an open gridframe having trunnions, supports for the trunnions, and means for rotating the grid-,

frame, of a separable rack and means thereon for ad3usting said rack in the open frame,

a spaced clamp frame for 'co-action with V the rack, and means for fastening the clamp frame to the grid-frame.

.7. In a rotary grid, the combination with an open grid-frame having trunnions and supports for the trunnions and means for rotating the grid frame, of a clamp frame and co-acting means'on said frames for fa tening them together, an intermediate rack, and-means on the rack for varying the space etween said rack andthe clamp frame.

8. The, combination with a grid-frame,

clamp frame, andco-acting means for clamping together frames, of an intermediate spacing rack, spacing bosses on one side offthe rack, andpins at the opposite ends of said -bosses for selectiveco-action with holesin said grid-frame... V p

9. In aerotary grid, the combination with a frame 'havingtrunnions and support therefor, of a driving shaft connected to one ofthe trunnions and a motor for shaft,

a separable clamp frame and co-acting 7 means for fastening said frames, an I lntermediate rack frame. 7

the combination 10. In a rotary grid, the combination with a frame having trunnions and a support therefor, of a driving shaft connected to one of the trunnions and a motor for the shaft, a pivotal pin between the shaft and trunnion, a separable Y clamp frame and fastening means therefor, and an interchangecble rack frame. I v

11. In rotary grid, the combination with a franiehaving trunnions, of a driving shaft and a pivotal connection between said shaft and a trunnion, and means for retarding or accelerating the rotary movement of the grid.

In a rotary grid, the combination with shaft having opposed flat faces and a spring-blade having frictional engagement on the shaft, of .a grid frame having trunnions, a pivotal connection between one of the trunnionsand said shaft, a separable clamp frame and clamping means therefor, and an intermediatereversible rack.

. lntestimony whereof I have afhxed my signature. 7 V CHEM-11138 F. BURKHARDT. 

